I dont understand why this thread even went into a topic when to change oil.
Change your rearend fluid and be done with it for a long time.
As for your oil change do it when you want does it really matter what other people do ? NO everyone is just giving there own opinion.
a recent thread like this in the past made me wonder hmmmmmm I wonder myself whats the difference between 3K mile oil and 5 thousand.
I dont drive my 69 every day or even every weekend I change the oil in it every January why when I dont put 3K a year on it ? I'm anal and I feel it needs to be changed.
On my 2010 I have to run 15w50 mobil one why ? 11.2.1 compression and a Cam and guess what my oil almost runs $10 a Quart.
I Changed my oil the first time ever 5W30 with 2K miles and guess what it was clean as hell ( I doubt any of you broke your car in like I did ) I even sent it off to a labratory to have it tested and guess what ? It passed with 72% remaining
Shortly afterwards goodbye to the L99 hello LS3 New Cam , pistons , everything thats when I went to 15W50 I was told to go to 1K change then go to 5K. Recently I just reached that mark and changed my Oil and guess what I again sent it off and had it tested and guess what ?
how do they know ? who knows yeah they say I can go longer but guess what I was told by who built my engine who also worked with and knows lingenfelter personally and they told me every 5K
Change your oil when you want its up to you yeah I would go 5K "IMO"
3K is to early hell 5 may even be to early but I work my engine.
I could probably go 7K however 5K makes me sleep better.
Whatever works for you do it and get lots of sleep at night I do then I get up and make the Oil work on 52 degree mornings like this morning